固体溶解到液体里时,固体还会有体积产生吗?

2025年04月07日 06:00
有4个网友回答
网友(1):

有体积,但是体积得变化和你的溶质溶剂以及浓度均有关系,这就需要定义一个偏摩尔体积的概念。简单的说,偏摩尔体积就是一定量溶质溶在一摩尔溶液中所应起的体积变化,它是溶液浓度的函数。但要注意偏摩尔体积未必一定为正,也就是说有些物质溶于水后反而会导致体积下降。

网友(2):

有的;只是溶液的体积小于溶剂加溶质之和。
酒精和水的例子已经举了,固液的同理。

网友(3):

当然有体积,如果没有体积的话就违反原子守恒定律
简单来说,冰是固体,溶解的有时有体积的,铁是固体,铁水也是有体积的

网友(4):

呵呵~~我浪费了我们家的半袋盐,完全溶解后,水面上升,有体积,不过应该比固体时候的体积小,因为分子间有间距,1L水和1L酒精混合不到2L一样

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